Feeding behaviour of larval Ambystoma mexicanum
Por:
Chaparro-Herrera, DD, Nandini, S, Sarma, SSS, Zambrano, L
Publicada:
1 dic 2011
Categoría:
Animal Science and Zoology
Resumen:
The Axolotl, Ambystoma mexicana?, endemic to the freshwater lakes, Xochimilco and Chalco in Mexico City, feeds on zooplankton during its larval stages. We evaluated the functional response over eight weeks of A. mexicanum fed different prey items found in its natural habitat (rotifers: Brachionus havanaensis, B. calyciflorus, B. rubens and Plationus patulus: cladocerans: Mama macrocopa, Macrothrix triserialis, Alona glabra and Simocephalus vetulus; and ostracods: Heterocypris incongruens). Zooplankton consumption by A. mexicanum varied in relation to the prey species and age of the larvae. Unlike oviparous fish larvae which often feed preferentially on rotifers in the first few weeks, A. mexicana?, larvae fed more on cladocerans and ostracods. Among the cladocerans offered, larval A. mexicana?, consumed higher numbers of M. triserialis and M. macrocopa. Feeding on the largest cladoceran tested. S. vetulus, increased after the fifth week. There was a consistent increase in the number of
Filiaciones:
Chaparro-Herrera, DD:
Univ Nacl Autonoma Mexico, Posgrad Ciencias Biol, Mexico City 04510, DF, Mexico
Nandini, S:
Univ Nacl Autonoma Mexico, Lab Zool Acuat, Div Invest & Posgrad, Tlalnepantla 54090, Edo De Mexico, Mexico
Sarma, SSS:
Univ Nacl Autonoma Mexico, Lab Zool Acuat, Div Invest & Posgrad, Tlalnepantla 54090, Edo De Mexico, Mexico
Zambrano, L:
Univ Nacl Autonoma Mexico, Dept Zool, Inst Biol, Mexico City 04510, DF, Mexico
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